Plow-point fastener.



No. 838.474. PATENTED DEG. 11,1906.

W. H. STBDHAM & J. N. MILLER;

PLOW POINT FASTBNER.

APPLICATION FILED AUG. 6, 1906.

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UNITED STATES PATENT OFFICE.

I/VILLIAIVI H. STEDHAM AND JOHN N. MILLER, OF ROYSE CITY, TEXAS.

PLOW-POINT FASTENER.

Specification of Letters Patent.

Patented Dec. 11, 1906 Application filed August 6, 1906. Serial No. 329,428.

To all whom, it may concern:

Be it known that we, I/VILLIAM H. STED- HAM and JOHN N. MILLER, citizens of the United States, residing at Royse City, in the county of Rockwall and State of Texas, have invented certain new and useful Improvements in Plow-Point Fasteners; and we do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

Our invention relates to improvements in plow-point fasteners, particularly with reference to devices for securing the points or shovels to the standards of cultivator-plows and it consists in the construction, combination, and arrangement of devices hereinafter described and claimed.

The object of our invention is to provide improved means for rapidly and securely fastening the points or shovels of cultivator plows to the standards thereof without the necessity of employing screws or bolts to secure the points or shovels in place.

In the accompanying drawings, Figure 1 is an elevation, partly in section, of a cultivator-plow provided with our improved devices for fastening the point, plate, or shovel to the standard. Fig. 2 is a detail perspec tive view of the lower portion of the standard. Fig. 3 is a similar view of the plate, point, or shovel. Fig. 4 is a similar view of the cam-lever and headed stud. Fig. 5 is partly an elevation and partly a sectional view showing a modified construction of the plate, point, or shovel and of the cam-lever. Fig. 6 is a detail sectional view of the plate, point, or shovel; and Fig. 7 is a similar view taken on the plane indicated by the line a a, of Fig. 3.

The plow or cultivator 1 may be of any construction. The standard 2 thereof is in accordance with our invention provided at its lower end with a slot 3, which extends to the bottom thereof to form a pair of arms 4 to bear against the rear side of the plate, point, or shovel 5. The said arms have their lower ends provided on their front sides with projections 6.

The plate, point, or shovel may be of any form and size. In accordance with our invention it is provided at a suitable point with a transversely extending opening 7. At

right angles to said opening, at the upper and lower sides thereof and communicating therewith, are recesses 8, formed in bosses 9 on the rear side of the shovel, point, or plate. The latter is also provided on its rear side with series of notches 10 for engagement by the projection 6 of the standard.

In connection with a standard and plate, point, or shovel thus constructed we provide the cam-lever 11 and the locking-stud 12. The cam-lever has its lower end bifurcated, as at 13, and in the fork thus formed the rear end of the stud is pivoted, as at 14. The arms of the fork have eccentric cams 15 on their front lower sides, and the stud is provided with a flattened head 16, having proj ecting shoulders 17 at opposite ends thereof.

In securing the plate, point, or shovel to the standard the flattened head of the stud is first passed through the rear side of the said plate, point, or shovel forwardly through the transverse opening 7 and is then turned to cause its shoulder 17 to enga e the recess 8 of said plate, point, or shove. The lever is then turned rearwardly and downwardly, and the stud has its shank portion, which is angular in cross-section, placed in the slot 3, the plate, point, or shovel being appropriately adjusted on the standard and held at such adjustment by the engagement of the projections 6 with certain of the notches 10. The lever is then turned upwardly to the position shown in full lines in Fig. 1, causing the eccentric cams 15 thereof by engagement with the rear side of the standard to draw rearwardly on the stud and cause the latter to lock the plate, point, or shovel firmly in place. The shape of the rear side of the standard and of the front side of the lever is such that the cams when the lever is turned upwardly in looking position act to hold such lever in such position.

In Fig. 5 of the drawings we show a modified' construction of the plate, point, or shovel and of the lever. Such plate, point, or shovel is provided on its rear side with a cuff portion 19, having a transverse opening 20 for the reception of the shank portion of the stud 21, so that the projections formed by the head of said stud may engage the front side of said cuff. The latter is also provided on its rear side with vertical flanges 22 to engage opposite sides of the standard ICC 2-3 and with notches 24 for engagement by the projections 25 of said standards. The

lever 26 has the lower section 27 and the Said upper detachable handle-section 28. lower section is formed substantially like the lower portion of the lever 11 with a bifurcation to receive the pivoted end of the stud and with eccentric cams 29 to bear against the rear side of the standard. Said lower section has at its outer end an arm 30 to eX- tend into a socket 31 formed in the upper sec invention will be readily understood without requiring a more extended explanation.

Various changes in the form, proportion, and the minor details of construction may be resortedifto without departing from the principle or sacrificing any of the advantages of the invention as defined by the appended claims.

Having thus described our invention, what we claim as new, and desire to secure byLetters Patent, is

1. In combination with a standard having a slot open at one end, a lever having a cam at one end to bear against the rear side of the standard, a stud pivoted to said lever at a point eccentric to said cam, and a shovel aving means for engagement by the head of the stud, substantially as described.

2. In combination with a standard having a slot at its lower end and forwardly-projecting points, a shovel having notches in its rear side for engagement by said points, a lever having a cam at its lower end, and a stud pivotally connected to said lever at a point eccentric to said cam, said stud and shovel having coacting devices whereby said stud may be detachably connected to said shovel, substantially as described.

In testimony whereof We have hereunto set ourhands in presence of two subscribing Witnesses.

WILLIAM H. STEDHAM. JOHN N. MILLER.

Witnesses:

E. C. MURPHY, B. E. MILLER. 

